交通运输系统工程与信息

交通运输系统工程与信息 ›› 2016, Vol. 16 ›› Issue (5): 71-78.

• 智能交通系统与信息技术 • 上一篇    下一篇

车联网中驾驶员反应时间实时估计方法

柴琳果a，蔡伯根a，王化深a，上官伟*a,b，王剑a,b   

  1. 北京交通大学a. 电子信息工程学院；b. 轨道交通控制与安全国家重点实验室，北京100044
  • 收稿日期:2015-11-18 修回日期:2016-05-23 出版日期:2016-10-25 发布日期:2016-10-25
  • 作者简介:柴琳果（1988-），男，湖北钟祥人，博士生.
  • 基金资助:

    中央高校基本科研业务费/ Fundamental Research Funds for the Central Universities (2016YJS035)；国家自然科学 基金/ National Natural Science Foundation of China（61273089）；北京市科技新星计划/ Beijing Science and Technology Star Plan (XX2014B038).

Real-time Estimating Method of Diver’s Reacting Time under the Condition of Internet of Vehicles

CHAI Lin-Guoa，CAI Bai-gena，WANG Hua-shena，SHANGGUANWeia,b，WANG Jiana,b   

  1. a. School of Electronic and Information Engineering; b. State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing 100044, China
  • Received:2015-11-18 Revised:2016-05-23 Online:2016-10-25 Published:2016-10-25

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被引次数

2

摘要：

结合车辆非线性分段制动特性和车辆状态数据对驾驶员反应时间进行实时估 计，采用特征数据拟合出初速度与减速度上升时间关系模型，通过BP神经网络推算减速 度上升过程中减速度随时间非线性变化关键参数，并在此基础上基于车辆动力学运动规 律求解车辆分段制动位移，通过实际位移与理论位移等价关系实现驾驶员反应时间实时 估计，最后利用Newell 跟驰模型场景对本文提出方法进行仿真验证.结果表明：不同初速 度条件下，反应时间估计值平均误差不超过0.022 s；不同反应时间条件下，反应时间估计 值平均误差不超过0.013 s.本文提出的反应时间估计方法不用增加通信负担和额外设备， 能够达到较高精度，具备更优的适应性、可用性及工程价值.

关键词: 交通工程, 反应时间估计, 制动特性, 车联网, 仿真验证

Abstract:

A driver reacting time real- time estimating method based on nonlinear piecewise braking features and vehicle status is proposed in this paper. Numerical fitting approach is used to illuminate the relationship of initial velocity and deceleration rising time. And a BP neural network is established to model the main parameters of the a- t curve. Based on the two vehicle dynamic models, it estimates the driver reacting time through comparison of the theoretical displacement and the actual displacement. It sets up a Newell car following model based simulating environment to verify the methodology. The results show that under the condition of different initial velocity, the error of estimated reacting time is less than 0.022 s. And under the condition of different reacting time, the error of estimated reacting time is less than 0.013 s. The method proposed in the paper doesn’t need extra information interaction and measurement devices. And the precision can meet the requirement of vehicle safety. It can be used in traffic engineering.

Key words: traffic engineering, reacting time evaluation, braking features, internet of vehicles, simulation and verification

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